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STRESS REDISTRIBUTION MECHANISM IN CONCRETE ELEMENTS WITH POLYMER FLEXIBLE JOINT: EXPERIMENTAL RESULTS



Author(s): Łukasz Zdanowicz (1), Marcin Tekieli (1), Arkadiusz Kwiecień (1)
Paper category: Proceedings
Book title: SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 1115-1120
Total Pages: 6
Language : English


Abstract: This paper describes the application of a Polymer Flexible Joint (PFJ) as a method of repairing concrete members. Prismatic specimens were concreted and tested in four-point bending up to failure to simulate damage. After failure they were repaired with PFJ with PT-type polymer and tested in flexure again. The aim of the research was to assess the repair effectiveness regarding load bearing capacity and strain capacity before and after repair and to show the stress redistribution phenomenon. Furthermore, during the tests two methods of measurements were applied – conventional measurements with extensometers and Digital Image Correlation (DIC) method. Results of load – crack mouth opening displacement (CMOD) and load – displacement obtained from both methods were compared and their compliance is presented. Moreover, it is shown that the DIC method is capable of presenting the developing crack pattern even before the maximum force is achieved. Failure mode can be thus better described and understood. Finally, the repair effectiveness was calculated as 87% in terms of load-bearing capacity and 278% in terms of strain capacity. The phenomenon of stress redistribution in concrete was explained and described.


Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00


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